Yes! These are 3D images of 20K! They have been scanned from a viewmaster disk and laid out so that they can be viewed in 3D with a common household stereoscope. Thanks to Ty Bumgardner for scanning the Disneyland exhibit ones.
Simply download the stereoscope cards from the links below and print them out at 150 DPI (they should come out about 7" x 3.5"). Enjoy! Don't fall in!